Freematics Forum

The freematics vehicle data logger is a programmable device. So you can make your own command-set and simply let it stream out data like reference datalogger sketch does.

To request for PID 2101 (if it's valid in your car), you can do like this:

Just check RPM regularly.

Please tell us the result. If it is good, I will update the sketch.

I didn't update the code for UART version in previous update and that caused your problem. I've just committed an update and please try with the new code.

Your car's ECU might be still reponding to PID request even if iginition is off. This is not the case for most cars and this causes the logger to continue logging data. You can tweak the code by adding a check for RPM and let the logger stop logging.

While the OBD adapter is using the serial UART, you can't use serial monitor or add Serial.println and that will simply interferece with the data communication.

The update sketch added test procedures and support for MPU-9150 9-axis MEMS module available in the new OBD-II I2C Adapter while 6-axis MPU-6050 is also supported with the same MPU9150 Arduino library. OBD library was also update recently. All the latest code and libraries were already committed to...

The voltage is not manipulated by the emulator. So the current workaround is using a voltage adjustable power supply. We might add that voltage emulation in future.

For just testing, you can use a android serial terminal app.